Conduit.



H. S. HUNT.

UONDUIT.

APPLICATION FILED 1113.10, 1911.

1,041,290lv Patented 0ct.15,1912.

I.2 SHEETS-SHEET 1.

5%@ i "wmmf www4 H. s. HUNT.

CONDUIT. APPLICATION FILED APB. l0, 1911. 1,041,290. .Patented Oct. 15,1912.

2 SHEETS-SHEET 2.

minnaars 3hmrn1ur 6%@ W QM/m Jackson,

Michigan, have invented certain new and- HORACE S. HUNT, OF JACKSON, MICHIGAN.

CONDUIT.

To all whom 'it may concern.'

Be it known that I, HORACE S. HUNT, a citizen of the United States, residing at in the county of Jackson, State of useful Improvements in Conduits and I do declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to whichl it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, specification.

This invention relates to metal lined concrete conduits for the conduction and distribution of liquids and fluids under pressure, and consists in the construction and arrangement of parts hereinafter more fully set forth and4 pointed out particularly in the claims.

The object of the'- invention is.to provide simple and efficient means for effecting a metallic joint between the ends of the sections of metal lining of concrete conduits for the purpose of rendering such conduits and the joints between the sections thereof impermeable to liquids and fluids, provision being made by the manner in which the ends of the sections of metal lining are joined for tying together the ends of the tubular sections forming the pipe or conduit in a manner to maintain a tight joint and resist longitudinal stress.

The above object is attained by the structure illustrated in the accompanying drawings, in which Fi re 1 is an elevation, partly in section, showing the method of joining the meeting ends of concrete pipe sections in a manner to effect a metallic union between the ends of the sections of metal lining within said pipe sections. Fig. 2 is a longitudinal sectional view throu h one of the pipe sections with a section o? metal lining embedded therein. Fig. 3 is an end elevation of a section of the conduit. Fig. 4 is an enlarged fragmentaryview in section through the joint between the ends of twok pipe sections, and through the end portions of the metal lining of said pipe sections, showing the manner, in a modified form, of effecting a metallic union between the. ends of the sections of lining, and at the same time sealing the joint between the pipe sections. Fig. 5 is a transi verse section through a conduit showing Specification of Letters Patent.

Application led April 10, A1911.

which form a part of this Patented Oct. 15, 1912. serial No, 619361.

joints between its component members, made in accordance with my invention, the character of the joint being slightly different from that shown in Figs. 1 and 4. Fig. (-3 is a fragmentary view in section through the ends of sections of conduit joined transversely in accordance with my invention, the end portions of said sections being held from lateral displacement by a tapered tongue and coperating bevlongitudinal eled seat. Fig. 7 is a sectional View showingthe parts forming the joint of Fig. 6, segregated.

Referring to the characters of reference, 1 designates the sections or units employed to form a concrete pipe orconduit. These sections may be provided against bursting strain by embedding in the cementitious wall thereof embracing steel bands or rings 2. In order that the conduit formed by these concrete pipe sections may be rendered impermeable to liquids and fiuids so as to enable the conduit formed of said sections to be employed for conducting water and gases under pressure, there is attached to the inner wall of each section, or embedded therein a metal lining 3 of the contour of the pipe in cross section which will resist the passage of-liquids or iuids through the wall of the conduit.

Diificulties have been experienced heretofore where concrete pipe sections having a metal lining have been used in effecting a tight joint or juncture between the meeting ends of the tubular members forming said lining, in a manner to prevent a leak at that point. I overcome these diiculties and effect a seal or tight joint between the ends of the tubular members forming the linin or impermeable stratumin the wall of the concrete sections by joining the registering ends 4 and 6 of the lining members in a closed channel 5 formed in or between the ends of the pipe sections lwhen placed together. The tubular lining 3 is so disposed in the pipe section and the channel 5 is so formed' as to leave exposed in said channel the end portions of said lining, when the pipe sections are placed end to end, as clearly shown in the drawings. In Figs. 1 to 4 inclusive the channel 5 is shown formed wholly in the end of one pipe section. In Figs. 5 to v7 inclusive said channel is shown between the ends or meeting faces of the pipe or conduit member Formed through the wall of the concrete 'los ' body/so as to communicate with the channel plurality of longitudinal divisions or sec- 5 is a sprue or ingate-opening 7 throu h. which molten metal 'may be poured. o join the ends of the pipe' sections and efeet a metal bond between the ends of the tubular members forming the metallic lining after the pipe sections have been placed together to cause their ends to. properly abut, molten metalis poured through the ingateopening 7 in sufficient quantity to entirely fill the channel 5,- thereby uniting the ends of the tubular lining members in a metal bond, as shown at 8, and at the same time joining the pipe sections together in a mane ner to prevent leakage between their abutting ends. The hardening. of the molten metal in the channel 5 after it is poured, effects a continuity of the metal lining and forms a bond to join the pipe sections together, the arrangement being vsuch that said bond becomes embedded in the concrete wall of the conduit in the same manner as are the tubular sections forming the metallic lining, whereby the bond 1s protected against the action of rust and acids.

Should it be desired to more rmly unite i 'the ends of the tubular lining members, than.

by simplycasting them in the metal bond 8, as shown in Fig. 1, the terminals of the tubular lining members may be flanged, as shown at 9 in Figs. 4, 5, 6 and 7, thereby a firmer hold insaid bond. i 5 is illustrated a-conduit formed insuring i In Fig. by joining the com onent members thereof a ong longitudinal lines. This arrangement enables the lengths of pipe to be. made of a.

tions, which to complete the conduit -are joined at their ends by the transverse joints. shown in the other views. f

By providing the lengths or sections of pipe with a tapered tongue or tenon 10 at` Witnesses:

one end and 'with a beveled recess or seat l11` at ,It-he other end to receive said tongue, as' clearly shown in Figs. 6 and 7, provision. is made for rmly uniting said sections.

when'placed end to end and for holding them against lateral displacement.

While I have shown pipe of circular cross...

section as the preferred form, I would have- -itunderstood that the invention is applicable to pipe of any form in cross section.

A Having thus fully set forth my invention, what I claim as new and desire to secure by Letters Patent, is l 1. A cementitious pipe or conduit composed of tubular sections provided with a channel at their meeting ends which is closed when the sections are placed together in axial alinement, an impermeable lining for said pipe sections whose terminals lie in said channel, and a bond of fusible'metal filling said channel and embedding the terminal of the lining sections therein to eifect a metallic union between the ends of the sections of the impermeable lining and the continuity of said lining throughout the length of the conduit.

2. A cementitious pipe or conduit composed of tubular sections of uniform diameter throughout their entire length havin a receiving channel between their abutting ends wholly within the plane'of themain walls thereof, a thin metallic lining for said pipe sections having flanged terminals which vlie in said channel when thel sections are placed end to end, and a filling of fusible metal in said channel embracing the flanged terminals of the sections of lining to effect a metallic coupli"g between the ends thereof.

In testimony whereof, I sign this specification in the presence of two witnesses.

- HORACE S. HUNT.

WM. W. Trauer,- v JoHN BUSTRAAN. 

